Servicing The Castor-Arm Bushings - Toro 31598 Operator's Manual

Figure 94
1. Height-of-cut chain
2. U-bolt
6. Adjust the other set of nuts to raise or lower the rear
of the mower deck and attain the correct mower-deck
pitch.
7. Tighten the jam nuts.
Adjusting the Side-Mower-Deck Pitch
1. Remove the tensioning cap from the caster-spindle
shaft and slide the spindle out of the caster arm
95).
Figure 95
1. Tensioning cap
2. Spacers
3. Shims
3. Nut (2)
(Figure
4. Top axle-mounting hole
5. Caster wheel
2. Position the shims, as required, to raise or lower the
castor wheel until the mower deck has the correct pitch.
3. Install the tensioning cap.
Servicing the Castor-Arm
Bushings
The caster arms have bushings pressed into the top and
bottom of the tube, and after many hours of operation, the
bushings wear. To check the bushings, move the caster fork
back and forth and from side to side. If the caster spindle is
loose inside the bushings, the bushings are worn and must be
replaced.
1. Raise the mower deck so that the wheels are off
the floor. Block the mower deck so that it cannot
accidentally fall.
2. Remove the tensioning cap, spacer(s), and thrust
washer from the top of the castor spindle.
Note: Record the position of the washers and spacers
before removal so the deck pitch does not have to be
adjusted.
3. Pull the castor spindle out of the mounting tube.
Allow the thrust washer and spacer(s) to remain on
the bottom of the spindle.
4. Insert a pin punch into the top or bottom of the
mounting tube and drive the bushing out of the tube
(Figure 96).
1. Castor arm tube
5. Drive the other bushing out of the tube.
6. Clean the inside of the tubes to remove dirt.
7. Apply grease to the inside and outside of the new
bushings.
8. Using a hammer and flat plate, drive the bushings into
the mounting tube.
9. Inspect the castor spindle for wear and replace it if it
is damaged.
10. Push the castor spindle through the bushings and
mounting tube. Slide the thrust washer and spacer(s)
onto the spindle.
11. Install the tensioning cap on the castor spindle to retain
all parts in place.
59
Figure 96
2. Bushings